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Additive metal solutions to aircraft skin corrosion

  • N. Matthews (a1), R. Jones (a2), D. Peng (a2), N. Phan (a3) and T. Nguyen (a3)...

Abstract

This paper focuses on the problem of skin corrosion on the upper wing surfaces of rib-stiffened aircraft. For maritime and military transport aircraft this often results in multiple co-located repairs. The common approach to corrosion damage in operational aircraft is to blend out the corrosion and rivet a mechanical doubler over the region. In particular this paper describes the results of a combined numerical and experimental investigation into the ability of the additive metal technology, Supersonic Particle Deposition (SPD), to restore the load-carrying capacity of rib-stiffened wing planks with simulated skin corrosion. The experimental results reveal that unrepaired skin corrosion can result in failure by yielding. The experimental results also reveal that SPD repairs to skin corrosion can restore the stress field in the structure, and can ensure that the load-carrying capability of the repaired structure is above proof load.

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1.Hendricks, W.R.The Aloha-Airlines accident – a new era for aging aircraft. In Structural Integrity of Aging Airplanes, Atluri, S.N., Sampath, S.G. and Tong, P., (Eds), Springer-Verlag, 1991, Berlin, Heildelberg, pp 153165.
2.Jones, R., Matthews, N., Rodopoulos, C.A., Cairns, K. and Pitt, S.On the use of supersonic particle deposition to restore the structural integrity of damaged aircraft structures, Int J Fatigue, 2011, 33, (9), pp 12571267.
3.Jones, R., Matthews, N., Green, R. and Peng, D.On the potential of supersonic particle deposition to repair simulated corrosion damage, Eng Fract Mech, 2015, 137, pp 2633.
4.Jones, R., Molent, L., Barter, S., Matthews, N. and Tamboli, D.Supersonic particle deposition as a means for enhancing the structural integrity of aircraft structures, Int J Fatigue, 2014, 68, pp 260268.
5.Jones, R., Matthews, N., Peng, D., Phan, N. and Nguyen, T.Applications of SPD to enhance the structural integrity of corroded airframes. In Aircraft Sustainment and Repair, Jones, R.N., Matthews, A.A.B. and Champagne, V. Jr., (Eds) Elsevier Butterworth-Heinemann Press, 2018, Oxford, UK, Chapter 16, pp 863906, ISBN 9780081005408.
6.Jones, R., Peng, D., Matthews, N. and Orchowski, N.A study into the ability of SPD to restore the buckling strength and modes of rib stiffened panels with simulated stress corrosion cracks, Int J Struct Integr, 2017, 8, (1), pp 6378.
7.Champagne, V. Jr., Matthews, N. and Champagne, V. III. Introduction to supersonic particle deposition. In Aircraft Sustainment and Repair, Jones, R., Matthews, N., Baker, A.A. and Champagne, V. Jr., (Eds), Elsevier Butterworth-Heinemann Press, 2018, Oxford, UK, Chapter 14, pp 799840, ISBN 9780081005408.
8.Matthews, N.Additive metal technologies for aerospace sustainment management. In Aircraft Sustainment and Repair, Jones, R., Matthews, N., Baker, A.A. and Champagne, V. Jr., (Eds), Elsevier Butterworth-Heinemann Press, 2018, Oxford, UK, Chapter 15, pp 845861, ISBN 9780081005408.
9.Matthews, N., Molent, L., Barter, S. and Jones, R.Application of SPD to enhance the structural integrity of fuselage skins and centre barrels metal technologies for aerospace sustainment management. In Aircraft Sustainment and Repair, Jones, R., Matthews, N., Baker, A.A. and Champagne, V. Jr., (Eds), Elsevier Butterworth-Heinemann Press, 2018, Oxford, UK, Chapter 17, pp 907929, ISBN 9780081005408.
10.Jones, R., Krishnapillai, M., Cairns, K. and Mathews, N.Application of infrared thermography to study crack growth and fatigue life extension procedures, Fatigue Fract Eng Mater Struct, 2010, 33, (12), pp 871884.

Keywords

Additive metal solutions to aircraft skin corrosion

  • N. Matthews (a1), R. Jones (a2), D. Peng (a2), N. Phan (a3) and T. Nguyen (a3)...

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